Re: [Openexr-devel] [Offtopic]| half lossy datatype

[Gonzalo Garramuno]

On 30/04/14 16:30, Paul Miller wrote:
> pow() doesn't like negative values, and I've seen different results on 
> different machines. You should clip negatives before calling it.
Thanks.  That was part of the problem.  However, I still don't get a 
clean transition from float to half uint16.  There are differences in 
the result between calling exr_halflt2uint( uint16_t ) and doing 
exr_half2float(uint16_t) + exr_flt2uint(uint32_t).
My guess is that it is because conversion from float to half is lossy.